document_replace_text · LibreOffice MCP Tools MCP

WHAT IT DOES

What document_replace_text does on LibreOffice MCP Tools

AI agents use document_replace_text to create or update resources in LibreOffice MCP Tools — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your LibreOffice MCP Tools environment.

WHY IT NEEDS A POLICY

Why document_replace_text needs a policy

This tool creates or modifies document data reversibly by finding and replacing text content. While replacement operations are reversible (can be undone), the capability to replace all occurrences of text in a document could have significant unintended consequences if misused by an AI agent (e.g., corrupting document meaning by replacing common words).

From the tool's definition Tool performs 'Find and replace text in a Writer document' with capability to 'replace all occurrences' - modifies document content reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

document_replace_text Rate-limited

document_replace_text stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "document_replace_text": {
      "limits": [
        {
          "counter": "document_replace_text_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches LibreOffice MCP Tools, so you can run agents against it safely.

FAQ

Questions about document_replace_text

What does the document_replace_text tool do? +

Find and replace text in a Writer document. Optionally replace all occurrences. It is categorised as a Write tool in the LibreOffice MCP Tools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on document_replace_text? +

Register the LibreOffice MCP Tools MCP server in PolicyLayer and add a rule for document_replace_text: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches LibreOffice MCP Tools. Nothing to install.

What risk level is document_replace_text? +

document_replace_text is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit document_replace_text? +

Yes. Add a rate_limit block to the document_replace_text rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block document_replace_text completely? +

Set action: deny in the PolicyLayer policy for document_replace_text. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides document_replace_text? +

document_replace_text is provided by the LibreOffice MCP Tools MCP server (passerbyflutter/libreoffice-mcp-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.